... some General requirements, such as water,order, bill. the waiter can take some relative documents to the certain table, can ... quality.Our company can provide several different kinds of table buzzer to suitable for different enviroments' requirement.1) taped cardPhysical ... mm) Weight:210.5g (With battery, stand) Control:5 call buttons(Service, order, water, bill, cancel) Output Power:20mW Modulations: ...